| Doc ID |
|
SOLN199321 |
| Version: |
|
4.0 |
| Status: |
|
Published |
| Published date: |
|
06 Jun 2017 |
| Created Date: |
|
11 Apr 2012 |
Details
Attached are two wiring diagrams displaying how to connect a PCMALL to a loop start line port on a PBX. Diagrams differ according to type of Amplifier.
Problem Clarification
When hooking up a PCM to a loop start line port on a PBX use the attached wiring diagram
Cause
Use for installation or replacement of PCM
Solution
When replacing or installing a PCM to a loop start line port follow the attached wiring diagram.
Attachment Description
Loop start line port to PCM wiring diagram with a TPU-B Amplifier
Additional Relevant Phrases
the unit supplies a 24V talk battery and loop current detection.When the unit detects a loop
resistance between Tip and Ring, it activates.When the loop opens, the page ends.The unit follows the status of the
trunk port.
Before configuring the UTI1 for a loop start trunk port, make sure that the power is disconnected and all other
connections are completed. Move the slide switches on the UTI1 to the positions shown below. Use a modular
telephone cord to connect the module to the phone system.
The center two conductors are Tip and Ring (24V DC) and have a specific polarity as shown in the figure to the
right. If the polarity that the trunk requires is opposite, you can use a reversing modular cord to make the
connection or reverse the connection through a modular block. The trunk disconnect feature is available in this mode.
